IB-CAS  > 植被与环境变化国家重点实验室
Soil dissolved organic carbon in terrestrial ecosystems: Global budget, spatial distribution and controls
Guo, Ziyu; Wang, Yihui1; Wan, Zhongmei2; Zuo, Yunjiang; He, Liyuan1; Li, Dan3; Yuan, Fenghui1,4; Wang, Nannan1,5; Liu, Jianzhao; Song, Yanyu; Song, Changchun; Xu, Xiaofeng1
2020
Source PublicationGLOBAL ECOLOGY AND BIOGEOGRAPHY
ISSN1466-822X
Volume29Issue:12Pages:2159-2175
AbstractAims Soil dissolved organic carbon (DOC) is a primary form of labile carbon in terrestrial ecosystems, and therefore plays a vital role in soil carbon cycling. This study aims to quantify the budgets of soil DOC at biome and global levels and to examine the variations in soil DOC and their environmental controls. Location Global. Time period 1981-2019. Methods We compiled a global dataset and analysed the concentration and distribution of DOC across 10 biomes. Results Large variations in DOC are found among biomes across space and the soil DOC concentration declines exponentially along soil depths. Tundra has the highest soil DOC concentration in 0-30 cm soils [453.75 (95% confidence interval: 324.95-633.5) mg/kg], whereas tropical and temperate forests have relatively lower DOC concentrations, ranging from 30.20 (24.78-36.80) to 54.54 (49.77-59.77) mg/kg. DOC generally accounts for < 1% of total organic carbon in soils, and DOC in 0-30 cm contributes more than half of the total DOC in the 0-100 cm soil profile. Furthermore, variations in DOC are primarily controlled by soil texture, moisture, and total organic carbon. Main conclusions A global synthesis is combined with an empirical model to extrapolate the DOC concentration along soil profiles across the globe, and global budgets of DOC are estimated as 7.20 Pg C in the top 0-30 cm and 12.97 Pg C in the 0-100 cm soil profile, respectively, with a considerable variation among biomes. The strong soil texture control but weak total organic carbon (TOC) control on DOC variations suggest that the investigation of physical protection of soil organic carbon might need to expand to consider the labile C in soils. The global maps of DOC concentration serve as a benchmark for validating land surface models in estimating carbon storage in soils.
Keywordbiomes dissolved organic carbon terrestrial ecosystems vertical distribution
Subject AreaEcology ; Geography, Physical
DOI10.1111/geb.13186
Indexed BySCI
Language英语
WOS KeywordMICROBIAL COMMUNITY COMPOSITION ; DIFFERENT LAND USES ; ACID FOREST SOILS ; NITROGEN DON ; MATTER DOM ; ALTITUDINAL GRADIENT ; SUBTROPICAL FOREST ; METHANE EMISSIONS ; CONIFEROUS FOREST ; INNER-MONGOLIA
WOS Research AreaEnvironmental Sciences & Ecology ; Physical Geography
WOS IDWOS:000576598600001
PublisherWILEY
SubtypeArticle
Publication PlaceHOBOKEN
EISSN1466-8238
Funding OrganizationSan Diego State University ; Basic Scientific Research Operating Expenses of Heilongjiang Provincial Universities [2018CX05] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41730643, 41975150, 41701198] ; National Key RD Program [2016YFA0602303]
Corresponding Author Emailywang7@sdsu.edu ; xxu@sdsu.edu
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Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ibcas.ac.cn/handle/2S10CLM1/21566
Collection植被与环境变化国家重点实验室
Affiliation1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun, Jilin, Peoples R China
2.San Diego State Univ, Biol Dept, San Diego, CA 92182 USA
3.Jilin Univ, Coll Earth Sci, Changchun, Jilin, Peoples R China
4.Heilongjiang Inst Technol, Coll Surveying & Mapping Engn, Harbin, Peoples R China
5.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang, Peoples R China
6.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Guo, Ziyu,Wang, Yihui,Wan, Zhongmei,et al. Soil dissolved organic carbon in terrestrial ecosystems: Global budget, spatial distribution and controls[J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY,2020,29(12):2159-2175.
APA Guo, Ziyu.,Wang, Yihui.,Wan, Zhongmei.,Zuo, Yunjiang.,He, Liyuan.,...&Xu, Xiaofeng.(2020).Soil dissolved organic carbon in terrestrial ecosystems: Global budget, spatial distribution and controls.GLOBAL ECOLOGY AND BIOGEOGRAPHY,29(12),2159-2175.
MLA Guo, Ziyu,et al."Soil dissolved organic carbon in terrestrial ecosystems: Global budget, spatial distribution and controls".GLOBAL ECOLOGY AND BIOGEOGRAPHY 29.12(2020):2159-2175.
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